The present paper reports the first observation of a vesicle to wormlike micelle transition in the surfactant cetyltrimethyl ammonium 3-hydroxynaphthalene-2-carboxylate induced by shear. The structural aspects investigated by small angle neutron scattering indicate that the transition induced by shear, temperature, and added surfactant present similar aspects. Step-shear experiments indicate the presence of other shear-induced transitions with very long characteristic times.